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Chris Duffy, 55, and his partner Michelle Laird, 46, were exercising their dogs in the garden of their home in Asgarby at the time of the incident.

Mr Duffy said: "We were in the front garden when we heard a thump. I thought someone had hit the traffic bollard at the junction that has come loose.

"The next thing we saw was the police heading down with blue lights on. I think they did an excellent job in turning traffic, including big lorries, around.

"When anything happens on the A17 everything just backs up. When you get traffic queuing, you know something is up.

"We went to bed at about 11pm and the police were still there."

The area of the crash

The eastbound lane was closed until about 1am. The fatality brings the number of people killed on Lincolnshire's roads so far this year to 37, compared to 48 at this time last year.

There have been four deaths in the space of three days in the past week. Two men were killed in a crash on the A1 involving a car and a lorry - their car burst into flames - at about 1am on October 11.